The fin whale (Balaenoptera physalus), also called the finback whale, is a baleen whale and the second-longest cetacean after the blue whale. The largest recorded fin whale measured 26 meters (85 feet) and weighed up to 81 tonnes (89 short tons). They have long, slender, brownish-gray bodies with a lighter underside for better camouflage from below (countershading).
